package com.hongtech.common.util;

import lombok.Setter;
import org.springframework.aop.framework.AopContext;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * Spring 工具类
 */
@Component
public class SpringUtil implements BeanFactoryPostProcessor, ApplicationContextAware {

    @Setter
    private static ConfigurableListableBeanFactory beanFactory1;

    @Setter
    private static ApplicationContext applicationContext1;

    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        synchronized (SpringUtil.class) {
            if (beanFactory1 == null) {
                setBeanFactory1(beanFactory);
            }
        }
    }

    public void setApplicationContext(ApplicationContext applicationContext) {
        synchronized (SpringUtil.class) {
            if (applicationContext1 == null) {
                setApplicationContext1(applicationContext);
            }
        }
    }

    /**
     * 获取对象
     *
     * @param name bean名称
     * @return Object 一个以所给名字注册的bean的实例
     */
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) throws BeansException {
        return (T) beanFactory1.getBean(name);
    }

    /**
     * 获取类型为requiredType的对象
     *
     * @param clz class对象
     * @return 返回实体
     */
    public static <T> T getBean(Class<T> clz) throws BeansException {
        return beanFactory1.getBean(clz);
    }

    /**
     * 如果BeanFactory包含一个与所给名称匹配的bean定义，则返回true
     *
     * @param name bean名称
     * @return 返回判断结果
     */
    public static boolean containsBean(String name) {
        return beanFactory1.containsBean(name);
    }

    /**
     * 判断以给定名字注册的bean定义是一个singleton还是一个prototype。
     * 如果与给定名字相应的bean定义没有被找到，
     * 将会抛出一个异常（NoSuchBeanDefinitionException）
     *
     * @param name bean名称
     * @return 返回判断结果
     */
    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return beanFactory1.isSingleton(name);
    }

    /**
     * @param name bean名称
     * @return Class 注册对象的类型
     */
    public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {
        return beanFactory1.getType(name);
    }

    /**
     * 如果给定的bean名字在bean定义中有别名，则返回这些别名
     *
     * @param name bean名称
     * @return 返回这些别名
     */
    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return beanFactory1.getAliases(name);
    }

    /**
     * 获取aop代理对象
     *
     * @return 返回实体
     */
    @SuppressWarnings("unchecked")
    public static <T> T getAopProxy() {
        return (T) AopContext.currentProxy();
    }

}
